Device for immobilizing multiple tissues for automated embedder
The device addresses the inefficiencies in immobilizing tissues by using a combination of an elastic structure, a retainer, and a filter to securely hold and position tissues during processing and embedding, thereby preventing loss and artifacts.
Patent Information
- Application Number
- PCT/CN2023/133766
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-11-23
- Publication Date
- 2025-05-30
AI Technical Summary
Existing methods for immobilizing surgical and biopsy tissues during processing and embedding are inefficient, leading to tissue loss and artifacts, as they fail to securely orient and retain tissues.
A device comprising a cover assembly with an elastic structure and a retainer made of two-dimensional porous material, combined with a base assembly featuring a filter, to securely hold and position multiple tissues during grossing, processing, and embedding.
The device effectively prevents tissue loss and artifacts by maintaining tissue position and orientation, ensuring efficient embedding and improved diagnostic outcomes.
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Figure CN2023133766_30052025_PF_FP_ABST
Abstract
Description
DEVICE FOR IMMOBILIZING MULTIPLE TISSUES FOR AUTOMATED EMBEDDERFIELD
[0001] The present disclosure relates to a field of histological tissue grossing, processing and embedding, and more particularly to a device for immobilizing multiple tissues for automated embedder.BACKGROUND
[0002] In related art, surgical tissues are generally placed in routine cassettes, biopsy tissues are placed in routine cassettes with fine mesh openings, and smallest tissues are placed in a bag or wrapped by gauze which prevents the tissue from escaping during processing in use with routine cassettes. However, surgical tissues and biopsy tissues cannot be orientated and retained in position during processing in routine cassettes.
[0003] US 8623300B2 discloses a method of immobilizing one or more biopsy tissues against a support during processing and embedding by using an open cell fully reticulated foam material. However, foam material may cause tissues to be lost as users’ complaint, increase carryover in processing protocol and distract diagnosis analysis.SUMMARY
[0004] Embodiments of the present disclosure seek to solve at least one of the problems existing in the related art to at least some extent.
[0005] To this end, embodiments of the present disclosure provide a device for immobilizing multiple tissues for an auto-embedder, which may hold multiple tissues in position, prevent small tissues from being lost, and avoid artifact on a surface of the tissues during grossing, processing and embedding.
[0006] According to embodiments of the present disclosure, a device for immobilizing multiple tissues for an auto-embedder includes a cover assembly, a base assembly and a frame. The cover assembly includes a cover, an elastic structure, and a retainer. The cover has openings for infiltration of solvents during grossing, processing and embedding. The elastic structure is connected to the cover and configured to provide a pressure on the tissues to press tissues against to a bottom of the base assembly and adjust the pressure according to the height of the tissues to avoid artifacts on the tissues, so that if using this device for auto embedding, the tissues will be embedded to the bottom surface of the solid paraffin block, which is more efficient to expose the full surface of the tissues when sectioning in a microtome. The retainer is connected to at least one of the cover or the elastic structure, made of a two-dimensional porous material which is infiltrated and resistant to the solvents used to fix, process and embed, and configured to wrap the tissues. Two-dimensional porous material has bigger permeability with smaller opening size than the cover and / or base. Specification like opening size, permeability, thickness, or mesh diameter of the retainer is important for tissue safety, tissue processing and avoiding artifacts on tissues. The base assembly has a cavity configured to contain the tissues. The base assembly includes a base and a filter. The base includes four side walls connected end-to-end and the filter is attached to the four side walls to define the cavity. The filter is made of a two-dimensional porous material which is infiltrated and resistant to solvents used to fix, process and embed. Specification like opening size, permeability and thickness of the filter is important to ensure tissue safety, tissue processing performance and good paraffin block surface. The cover assembly and the base assembly are detachably attached to the frame. The retainer is located between the elastic structure and the base assembly such that the tissues contained in the base assembly is held in position by the elastic structure and the retainer.
[0007] According to embodiments of the present disclosure, the device may hold the tissues in position by providing the elastic structure, the retainer and the filter to prevent the loss of small tissues and avoid the artifact on a surface of the tissues during grossing, processing and embedding.
[0008] In some embodiments, the base defines a through groove tapering from top to bottom, and the filter is attached to a bottom edge of the through groove and closes the through groove to define the cavity.
[0009] In some embodiments, the device further includes a solid material configured to support the filter on the base in case the filter is not stiff or flat, particularly for injection molding. Thus, the filter may be fixed to the base easily and firmly.
[0010] In some embodiments, the filter is attached to the base by insert molding, hot melting or gluing. Thus, the filter may be firmly connected to the base.
[0011] In some embodiments, the two-dimensional porous material includes nonwoven, mesh, paper, or any combination thereof. Thus, the retainer and the filter may be costly manufactured.
[0012] In some embodiments, the elastic structure and the cover are formed into one piece, or the elastic structure is a separate part from the cover. When the elastic structure and the cover are formed into one piece, a connecting structure between the elastic structure and the cover may be omitted, to facilitate lightweight of the device. When the elastic structure is a separate part from the cover, the elastic structure may be replaced easily if necessary.
[0013] In some embodiments, the retainer is attached to at least one of the cover or the elastic structure by insert molding, hot melting or gluing. Thus, the retainer may be firmly connected to the cover and / or the elastic structure.
[0014] In some embodiments, the elastic structure includes a plurality of elastic portion and a supporting portion, the plurality of elastic portions are connected between the cover and the supporting portion and configured to provide the pressure on the tissues and adjust the pressure according to the height of the tissues, and the supporting portion is configured to hold the tissues. Thus, the tissues may be held in position by the plurality of elastic portions and the supporting portion during grossing, processing and embedding.
[0015] In some embodiments, the elastic structure further includes a connecting portion connected between the cover and the plurality of elastic portions. Thus, the elastic structure is detachably connected to the cover easily.
[0016] In some embodiments, the connecting portion includes a recessed portion, the cover includes a snap, and the snap of the cover is engaged in the recessed portion of the connecting portion to fix the cover and the connecting portion together. Thus, the elastic structure is detachably connected to the cover firmly.
[0017] In some embodiments, the retainer is attached to the supporting portion. Thus, the structure of the retainer is simple.
[0018] In some embodiments, the retainer has an accommodating groove configured to receive the elastic structure, and a gap is defined between the supporting portion and a bottom of the accommodating groove of the retainer. The gap between the supporting portion and the retainer facilitates deformation of the retainer towards the supporting portion, such that larger surface area of the tissues may be wrapped up by the retainer when immobilizing the tissues, the tissues may be stably held between the retainer and the base, and an impression may be prevented from forming on a surface of the tissues.
[0019] In some embodiments, the elastic structure includes a connecting portion and a plurality of elastic portions, the connecting portion is connected between the cover and the plurality of elastic portions, and the plurality of elastic portions are configured to provide the pressure on the tissues and adjust the pressure according to the height of the tissues. Thus, the tissues may be held in position by the plurality of elastic portions during grossing, processing and embedding.
[0020] In some embodiments, the connecting portion defines a hole, the cover includes a pin, and the pin of the cover is in interference fit with the hole of the connecting portion. Thus, the elastic structure is detachably connected to the cover firmly.
[0021] In some embodiments, the retainer has an accommodating groove configured to receive the elastic structure, and a flanged edge around the accommodating groove, the cover includes a flange portion, and the flanged edge of the retainer is connected to the flange portion of the cover. Thus, the retainer may be firmly connected to the cover.
[0022] According to embodiments of the present disclosure, an auto-embedder can use a device for immobilizing multiple tissues as described in above embodiments, and a cooling mold configured to accommodate the device and create a paraffin block.
[0023] The above summary of the present disclosure is not intended to describe each disclosed embodiment or every implementation of the present disclosure. The Figures and the detailed description which follow more particularly exemplify illustrative embodiments.
[0024] Additional aspects and advantages of embodiments of present disclosure will be given in part in the following descriptions, become apparent in part from the following descriptions, or be learned from the practice of the embodiments of the present disclosure.BRIEF DESCRIPTION OF THE DRAWINGS
[0025] These and other aspects and advantages of embodiments of the present disclosure will become apparent and more readily appreciated from the following descriptions made with reference to the drawings, in which:
[0026] FIG. 1 is a perspective view of a device for immobilizing tissues according to an embodiment of the present disclosure.
[0027] FIG. 2 is another perspective view of a device for immobilizing tissues according to an embodiment of the present disclosure.
[0028] FIG. 3 is a schematic diagram of a cover assembly according to an embodiment of the present disclosure.
[0029] FIG. 4 is an exploded view of the cover assembly according to an embodiment of the present disclosure.
[0030] FIG. 5 is a sectional view of an exploded cover assembly according to an embodiment of the present disclosure.
[0031] FIG. 6 is a sectional view of a cover assembly according to an embodiment of the present disclosure.
[0032] FIG. 7 is a top view of a base and filter according to an embodiment of the present disclosure.
[0033] FIG. 8 is a section view of a base and a filter according to an embodiment of the present disclosure.
[0034] FIG. 9 is a section view of a base assembly according to an embodiment of the present disclosure.
[0035] FIG. 10 is a perspective view of a frame according to an embodiment of the present disclosure.
[0036] FIG. 11 shows an assembly sequence of the device according to an embodiment of the present disclosure.
[0037] FIG. 12 is perspective view of the device according to an embodiment of the present disclosure.
[0038] FIG. 13 is a sectional view of the device according to an embodiment of the present disclosure.
[0039] FIG. 14 is sectional view of the device according to an embodiment of the present disclosure.
[0040] FIG. 15 is a perspective view of a device for immobilizing tissues according to another embodiment of the present disclosure.
[0041] FIG. 16 is another perspective view of the device according to another embodiment of the present disclosure.
[0042] FIG. 17 is a schematic diagram of a cover assembly according to another embodiment of the present disclosure.
[0043] FIG. 18 is an exploded view of the cover assembly according to another embodiment of the present disclosure.
[0044] FIG. 19 is a sectional view of an exploded cover assembly according to another embodiment of the present disclosure.
[0045] FIG. 20 is a section view of a base assembly according to another embodiment of the present disclosure.
[0046] FIG. 21 is a section view of a base assembly according to another embodiment of the present disclosure.
[0047] FIG. 22 is a perspective view of a frame according to another embodiment of the present disclosure.
[0048] FIG. 23 is perspective view of the device according to another embodiment of the present disclosure.
[0049] FIG. 24 is a sectional view of the device according to another embodiment of the present disclosure.
[0050] FIG. 25 is a sectional view of the device according to another embodiment of the present disclosure.
[0051] FIG. 26 is another sectional view of the device according to another embodiment of the present disclosure.
[0052] FIG. 27 is a perspective view of a device for immobilizing tissues according to yet another embodiment of the present disclosure.
[0053] FIG. 28 is a schematic diagram of a cover assembly according to yet another embodiment of the present disclosure.
[0054] FIG. 29 is a sectional view of a cover assembly according to yet another embodiment of the present disclosure.
[0055] FIG. 30 is a perspective view of the device according to yet another embodiment of the present disclosure.
[0056] FIG. 31 is another perspective view of the device according to yet another embodiment of the present disclosure.
[0057] FIG. 32 is a section view of the device according to yet another embodiment of the present disclosure.
[0058] FIG. 33 is a perspective view of a device for immobilizing tissues according to still another embodiment of the present disclosure.
[0059] FIG. 34 is an exploded view of a cover assembly according to still another embodiment of the present disclosure.
[0060] FIG. 35 is a perspective view of the device according to still another embodiment of the present disclosure.
[0061] FIG. 36 is a section view of the device according to still another embodiment of the present disclosure.
[0062] FIG. 37 is another section view of the device according to still another embodiment of the present disclosure.
[0063] FIG. 38 is a sectional view of the device according to an embodiment of the present disclosure illustrated in FIG. 12.
[0064] FIG. 39 is a schematic view of a cooling mold according to an embodiment of the present disclosure.
[0065] FIG. 40 is a schematic view of a device for immobilizing multiple tissues and a cooling mold according to an embodiment of the present disclosure.
[0066] FIG. 41 is a sectional view of FIG. 40.
[0067] FIG. 42 is another sectional view of a cooling mold and a device for immobilizing multiple tissues according to an embodiment of the present disclosure.
[0068] FIG. 43 is another sectional view of a cooling mold and a device for immobilizing multiple tissues according to an embodiment of the present disclosure.
[0069] FIG. 44 is a schematic view of a solid paraffin block according to an embodiment of the present disclosure.
[0070] DETAILED DESCRIPTION OF THE DISCLOSURE
[0071] Reference will be made in detail to embodiments of the present disclosure. The embodiments described herein with reference to drawings are explanatory, illustrative, and used to generally understand the present disclosure. The embodiments shall not be construed to limit the present disclosure. The same or similar elements and the elements having same or similar functions are denoted by like reference numerals throughout the descriptions.
[0072] In the specification, unless specified or limited otherwise, relative terms such as “central” , “longitudinal” , “lateral” , “front” , “rear” , “right” , “left” , “inner” , “outer” , “lower” , “upper” , “horizontal” , “vertical” , “above” , “below” , “up” , “top” , “bottom” as well as derivative thereof (e.g., “horizontally” , “downwardly” , “upwardly” , etc. ) should be construed to refer to the orientation as then described or as shown in the drawings under discussion. These relative terms are for convenience of description and do not require that the present disclosure be constructed or operated in a particular orientation.
[0073] In addition, terms such as “first” and “second” are used herein for purposes of description and are not intended to indicate or imply relative importance or significance or to imply the number of indicated technical features. Thus, the feature defined with “first” and “second” may comprise one or more of this feature. In the description of the present invention, “a plurality of” means two or more than two, unless specified otherwise.
[0074] In the present invention, unless specified or limited otherwise, the terms “mounted, ” “connected, ” “coupled, ” “fixed” and the like are used broadly, and may be, for example, fixed connections, detachable connections, or integral connections; may also be mechanical or electrical connections; may also be direct connections or indirect connections via intervening structures; may also be inner communications or interactions of two elements, which can be understood by those skilled in the art according to specific situations.
[0075] A device for immobilizing multiple tissues for an auto-embedder according to embodiments of the present disclosure will be described in detail below with reference to FIGS. 1 to 37.
[0076] As illustrated in FIGS. 1 to 37, according to embodiments of the present disclosure, a device for immobilizing multiple tissues includes a cover assembly 110, 210, 310, 410, a base assembly 120, 220, 320, 420, and a frame 130, 230, 330, 430. The cover assembly 110, 210, 310, 410 includes a cover 111, 211, 311, 411, an elastic structure 113, 213, 313, 413 and a retainer 112, 212, 312, 412. The cover 111, 211, 311, 411 has openings for infiltration of solvents during grossing, processing and embedding. The elastic structure 113, 213, 313, 413 is connected to the cover 111, 211, 311, 411 and configured to provide a pressure on the tissues to press tissues against to a bottom of the base assembly and adjust the pressure according to the height of the tissues to avoid artifacts on the tissues, so that if using this device for auto embedding, the tissues will be embedded to the top surface of the paraffin block, which is more efficient to expose the full surface of the tissues when sectioning in a microtome. The retainer 112, 212, 312, 412 is connected to at least one of the cover 111, 211, 311, 411 or the elastic structure 113, 213, 313, 413, made of a two-dimensional porous material which is infiltrated and resistant to the solvents used to fix, process and embed, and configured to wrap the tissues. Two-dimensional porous material has bigger permeability with smaller opening size than the cover 111, 211, 311, 411 and / or base 150, 250, 350, 450. Specification like opening size, permeability, thickness, or mesh diameter of the retainer is important for tissue safety, tissue processing and avoiding artifacts on tissues. The base assembly 120, 220, 320, 420 has a cavity 121, 221, 321, 421 configured to contain the tissues and includes a base 150, 250, 350, 450 and a filter 140, 240, 340, 440. The base 150, 250, 350, 450 includes four side walls 129, 229, 329 connected end-to-end and the filter 140, 240, 340, 440 is attached to the four side walls 129, 229, 329 of the base 150, 250, 350, 450 to define the cavity 121, 221, 321, 421. Specification like opening size, permeability and thickness of the filter is important to ensure tissue safety, tissue processing performance and good paraffin block surface. The cover assembly 110, 210, 310, 410 and base assembly 120, 220, 320, 420 are detachably attached to the frame 130, 230, 330, 430. The filter 140, 240, 340, 440 is made of a two-dimensional porous material which is infiltrated and resistant to solvents used to fix, process and embed. The retainer 112, 212, 312, 412 is located between the elastic structure 113, 213, 313, 413 and the base assembly 120, 220, 320, 420 such that the tissues contained in the base assembly 120, 220, 320, 420 is held in position by the elastic structure 113, 213, 313, 413 and the retainer 112, 212, 312, 412.
[0077] According to embodiments of the present disclosure, the device may hold the tissues in position by providing the elastic structure 113, 213, 313, 413, the retainer 112, 212, 312, 412 and the filter 140, 240, 340, 440 to prevent the loss of small tissues and avoid the artifact on a surface of the tissues during grossing, processing and embedding.
[0078] In some embodiments, as illustrated in FIGS. 8 and 20, the base 150, 250 defines a through groove 126, 226 tapering from top to bottom, and the filter 140, 240 is attached to a bottom edge of the through groove 126, 226 and closes the through groove 126, 226 to define the cavity 121, 221. Thus, the weight of the base 150, 250 may be reduced.
[0079] In some embodiments, as illustrated in FIGS. 1 to 37, the device further includes a solid material configured to fix the filter 140, 240, 340, 440 on the base 150, 250, 350, 450 in case the filter is not stiff or flat, particularly for injection molding. Thus, the filter 140, 240, 340, 440 may be fixed to the base 150, 250, 350, 450 easily and firmly.
[0080] In some embodiments, as illustrated in FIGS. 1 to 37, the filter 140, 240, 340, 440 is attached to the base 150, 250, 350, 450 by insert molding, hot melting or gluing. Thus, the filter 140, 240, 340, 440 may be firmly connected to the base 150, 250, 350, 450.
[0081] In some embodiments, as illustrated in FIGS. 1 to 37, the two-dimensional porous material includes nonwoven, mesh, paper, or any combination thereof. Thus, the retainer 112, 212, 312, 412 and the filter 140, 240, 340, 440 may be costly manufactured.
[0082] In some embodiments, as illustrated in FIGS. 5, 19, 28 and 34, the elastic structure 113, 213 and the cover 111, 211 are formed into one piece, or the elastic structure 313, 413 is a separate part from the cover 311, 411. When the elastic structure 113, 213 and the cover 111, 211 are formed into one piece, a connecting structure between the elastic structure 113, 213 and the cover 111, 211 may be omitted, to facilitate lightweight of the device. When the elastic structure 313, 413 is a separate part from the cover 311, 411, the elastic structure 313, 413 may be replaced easily if necessary.
[0083] In some embodiments, as illustrated in FIGS. 6 and 29, the retainer 112, 212, 312, 412 is attached to at least one of the cover 111, 211, 411 or the elastic structure 313 by insert molding, hot melting or gluing. Thus, the retainer 112, 212, 312, 412 may be firmly connected to the cover 111, 211, 311, 411 and / or the elastic structure 113, 213, 313, 413.
[0084] In some embodiments, as illustrated in FIGS. 5, 19, and 29, the elastic structure 113, 213, 313 includes a plurality of elastic portions 1131, 2131, 3131 and a supporting portion 1132, 2132, 3132, the plurality of elastic portions 1131, 2131, 3131 are connected between the cover 111, 211, 311 and the supporting portion 1132, 2132, 3132 and configured to provide the pressure on the tissues and adjust the pressure according to the height of the tissues, and the supporting portion 1132, 2132, 3132 is configured to hold the tissues. Thus, the tissues may be held in position by the plurality of elastic portions 1131, 2131, 3131 and the supporting portion 1132, 2132, 3132 during grossing, processing and embedding.
[0085] In some embodiments, as illustrated in FIGS. 28 and 33, the elastic structure 313, 413 further includes a connecting portion 3133, 4133 connected between the cover 311, 411 and the plurality of elastic portions 3131, 4131. Thus, the elastic structure 313, 413 is detachably connected to the cover 311, 411 easily.
[0086] In some embodiments, as illustrated in FIG. 28, the connecting portion 3133 includes a recessed portion 3134, the cover 311 includes a snap 3111, and the snap 3111 of the cover 311 is engaged in the recessed portion 3134 of the connecting portion 3133 to fix the cover 311 and the connecting portion 3133 together. Thus, the elastic structure 313 is detachably connected to the cover 311 firmly.
[0087] In some embodiments, as illustrated in FIG. 29, the retainer 312 is attached to the supporting portion 3132. Thus, the structure of the retainer 312 is simple.
[0088] In some embodiments, as illustrated in FIG. 6, the retainer 112 has an accommodating groove 1121 configured to receive the elastic structure 113, and a gap 114 is defined between the supporting portion 1132 and a bottom of the accommodating groove 1121 of the retainer 112. The gap 114 between the supporting portion 1132 and the retainer 112 facilitates deformation of the retainer 112 towards the supporting portion 1132, such that larger surface area of the tissues may be wrapped up by the retainer 112 when immobilizing the tissues, the tissues may be stably held between the retainer 112 and the base assembly 120, and an impression may be prevented from forming on a surface of the tissues.
[0089] In some embodiments, as illustrated in FIG. 34, the elastic structure 413 includes a connecting portion 4133 and a plurality of elastic portions 4131, the connecting portion 4133 is connected between the cover 411 and the plurality of elastic portions 4131, and the plurality of elastic portions 4131 are configured to provide the pressure on the tissues and adjust the pressure according to the height of the tissues. Thus, the tissues may be held in position by the plurality of elastic portions 4131 during grossing, processing and embedding.
[0090] In some embodiments, as illustrated in FIG. 34, the connecting portion 4133 defines a hole 4134, the cover 411 includes a pin 4114, and the pin 4114 of the cover 411 is in interference fit with the hole 4134 of the connecting portion. Thus, the elastic structure 413 is detachably connected to the cover 411 firmly.
[0091] In some embodiments, as illustrated in FIGS. 5 and 19, the retainer 112, 212 has an accommodating groove 1121, 2121 configured to receive the elastic structure 113, 213, and a flanged edge 1122, 2122 around the accommodating groove 1121, 2121, the cover 111, 211 includes a flange portion 1114, 2116, and the flanged edge 1122, 2122 of the retainer 112, 212 is connected to the flange portion 1114, 2116 of the cover 111, 211. Thus, the retainer 112, 212 may be firmly connected to the cover 111, 211.
[0092] A device for immobilizing multiple tissues according to specific embodiments of the present disclosure will be described in detail below with reference to FIGS. 1 to 37.
[0093] A device for immobilizing tissues according to an embodiment of the present disclosure will be described in detail below with reference to FIGS. 1 to 14.
[0094] FIG. 1 is a perspective view of a device 100 for immobilizing tissues according to an embodiment of the present disclosure. The device 100 includes a frame 130, a cover assembly 110 and a base assembly 120. The frame 130 is a support part for remaining parts of the device 100. The cover assembly 110 and the base assembly 120 are connected to the frame 130, the base assembly 120 has a cavity 121 configured to accommodate the tissues, and the cover assembly 110 is configured to provide a pressure on the tissues and adjust the pressure according to a height of the tissues sample, to compress the tissues against the base assembly 120 to immobilize the tissues during grossing, processing and embedding of the tissues.
[0095] FIG. 2 is another perspective view of the device 100. As illustrated in FIG. 2, the cover assembly 110 includes a cover 111, a retainer 112, and an elastic structure 113 connected between the cover 111 and the retainer 112. The retainer 112 is attached to the cover 111, e.g., by hot melting or gluing. The retainer 112 is made of a two-dimensional porous material, such as nonwoven, mesh, paper, or any combination thereof. The base assembly 120 includes a base 150 and a filter 140. The filter 140 is attached to the base 150, e.g., by over-molding, hot melting or gluing. The filter 140 is made of a two-dimensional material such as nonwoven, mesh, paper or combination thereof.
[0096] FIG. 3 is a schematic diagram of a cover assembly 110 according to the present embodiment. As illustrated in FIG. 3, the elastic structure 113 includes a supporting portion 1132, and a plurality of elastic portions 1131 connected between the cover 111 and the supporting portion 1132. The cover 111 is substantially a rectangular plate, and defines a square central opening 1111 in a middle of the cover 111. The supporting portion 1132 is substantially a square plate with a maze surface, and is configured to hold the tissues. Furthermore, the supporting portion 1132 is flexible for holding the tissues having different heights. The plurality of elastic portions 1131 is configured to adjust a pressure for holding the tissues. As illustrated, there may be four elastic portions 1131. Each of four elastic portions 1131 is a spring rib extending from a side of the supporting portion 1132 to an inner side of the central opening 1111 that is opposite the side of the supporting portion 1132. Thus, the four elastic portions 1131 assume a shape of vortex viewing from top. The cover 111 also defines a plurality of openings 1112 around the central opening 1111. The plurality of openings 1112 may have various shapes, such as a square shape, a rectangular shape, or a long-strip shape.
[0097] FIG. 4 is an exploded view of the cover assembly 110 according to the present embodiment. As illustrated in FIG. 4, each of the plurality of elastic portions 1131 is spiral in a three-dimensional space, and tapering from the cover 111 to the supporting portion 1132, such that the pressure on the tissues is appropriate to avoid an artifact on the tissues under a microscope. It could be understood that, selection of a thickness and a width of the elastic portion 1131 also has an effect on the pressure on the tissues.
[0098] In addition, the cover 111 includes a protrusion 1113 formed on a peripheral side of the cover 111 and configured to assemble the cover assembly 110 to the frame 130. As illustrated in FIG. 4, eight protrusions 1113 are formed on and spaced apart from each other on the peripheral side of the cover 111.
[0099] FIG. 5 is a sectional view of an exploded cover assembly 110 according to the present embodiment. As illustrated in FIG. 5, the retainer 112 defines an accommodating groove 1121 for receiving the supporting portion 1132 and the plurality of elastic portions 1131. That is, the accommodating groove 1121 is manufacturing according to a spatial shape of the supporting portion 1132 and the plurality of elastic portions 1131.
[0100] FIG. 6 is a sectional view of a cover assembly 110 according to the present embodiment. As illustrated in FIG. 6, the cover 111 further includes a flange portion 1114 extending from a bottom face of the cover 111 and around the central opening 1111, the retainer 112 includes a flanged edge 1122 around the accommodating groove 1121, and the retainer 112 is attached to the flange portion 1114 by hot melting or gluing the flanged edge 1122 of the retainer 112 to a bottom face of the flange portion 1114 of the cover 111.
[0101] Additionally, there is a gap 114 between the supporting portion 1132 and a bottom of the accommodating groove 1121 of the retainer 112. The gap 114 between the supporting portion 1132 and the retainer 112 facilitates deformation of the retainer 112 towards the supporting portion 1132, such that larger surface area of the tissues may be wrapped up by the retainer 112 when immobilizing the tissues, the tissues may be stably held between the retainer 112 and the base assembly 120, and an impression may be prevented from forming on a surface of the tissues.
[0102] Additionally, the flange portion 1114 may also define a plurality of openings 1115 having various shapes, such as a square shape, a rectangular shape, or a long-strip shape, for infiltration of solvents during grossing, processing and embedding.
[0103] FIG. 7 is a top view of a base assembly 120 according to the present embodiment. As illustrated in FIG. 7, the filter 140 is a substantially rectangular sheet, and has a size designed for accommodating a small tissues and allowing a resulting paraffin block to be sectioned into at least ten continuous sections, which is requested to diagnosis small biopsy tissues. The filter 140 is made of a two-dimensional porous material with fine openings for infiltration of solvents and resistant to processing materials and embedding materials. It could be understood that a size of the fine openings of the filter 140 is smaller than a size of the openings in the cover 111. The filter 140 may prevent the small tissues from loss during grossing, processing and embedding, to ensure the safety of the tissues.
[0104] FIG. 8 is a section view of a base assembly 120 according to the present embodiment. As illustrated in FIG. 8, the base 150 defines a through groove 126 which tapers from top to bottom, and the through groove 126 is configured to receive the retainer 112 of the cover assembly 110. The filter 140 may be attached to a bottom edge 122 of the through groove 126 to define the cavity 121 configured to contain the tissues.
[0105] Additionally, the base 150 defines an annular groove 123 around the through groove 126 and configured to receive the flange portion 1114 of the cover 111, such that the flanged edge 1122 of the retainer 112 may be clamped between the flange portion 1114 of the cover 111 and the annular groove 123 of the base 150, and the safety of the tissues between the retainer 112 and the base 150 can be improved.
[0106] Moreover, the base 150 includes a peripheral side 125, an intermediate plate 127 connected to a bottom edge of the peripheral side 125 and defining a rectangular opening, and four side walls 129 protruding downwardly from edges of the rectangular opening of the intermediate plate 127. The four side walls 129 are connected end-to-end to define the through groove 126, and the filter 140 is attached to bottom edges 122 of the four side walls 129.
[0107] Additionally, the base 150 defines first paraffin slots 151 in the peripheral side 125, and second paraffin slots 153 in the four side walls 129, to receive liquid paraffin when dispensing liquid paraffin during automatic embedding, and form undercut after the liquid paraffin becomes solid.
[0108] FIG. 9 is a section view of a base assembly 120 according to the present embodiment. The filter 140 may be attached to the base 150, e.g., by hot melting or gluing to define a cavity 121 configured to receive the tissues and create a paraffin block when embedding. As illustrated in FIG. 9, a peripheral edge of the filter 140 is attached to the bottom edge 122 of the through groove 126 of the base 150 to define the cavity 121, and the cavity 121 has a shape matching a shape of the accommodating groove 1121 of the retainer 112.
[0109] Additionally, the base 150 may include a recessed portion 124 in a peripheral side of the base 150 and configured to assemble with the frame 130. As illustrated in FIGS. 2 and 9, the base 150 includes six recessed portions 124 defined on and spaced apart along the peripheral side of the base 150.
[0110] FIG. 10 is a perspective view of a frame 130 according to the present embodiment. The frame 130 may include a first snap 131 configured to assemble the cover assembly 110, and a second snap 132 configured to support the base assembly 120. As illustrated in FIG. 10, the frame 130 has a substantially box shape with open top and bottom, and includes eight first snaps 131 and six second snaps 132 formed on an inner face of the frame 130. The eight first snaps 131 are close to a top face of the frame 130, and the six second snaps 132 are lower than the eight first snaps 131.
[0111] Additionally, the frame 130 includes an inclined surface 133 configured to print information of the tissues, such as a trackable code.
[0112] FIG. 11 shows an assembly sequence of the device 100 according to the present embodiment. As illustrated in FIG. 11, the base assembly 120 is assembled to the frame 130, and then the cover assembly 110 is assembled to the frame 130. Furthermore, the cover assembly 110 and the base assembly 120 are detachably attached to the frame 130.
[0113] FIG. 12 is perspective view of the device 100 according to the present embodiment in a closing status. The protrusion 1113 of the cover 111 corresponds in position to the first snap 131 of the frame 130, and the recessed portion 124 of the base 150 corresponds in position to the second snap 132 of the frame 130. Thus, the cover assembly 110 may be assembled to the frame 130 through snap-fit between the protrusion 1113 and the first snap 131, and the base assembly 120 may be assembled to the frame 130 through snap-fit between the recessed portion 124 and the second snap 132. In combination with FIGS. 2, 10 and 12, the eight protrusions 1113 of the cover 111 correspond in position to the eight first snaps 131 of the frame 130, and the six recessed portions 124 of the base 150 correspond in position to the six second snaps 132 of the frame 130. Thus, the cover assembly 110 may be assembled to the frame 130 through eight snap-fits between the protrusions 1113 and the first snaps 131, and the base assembly 120 may be assembled to the frame 130 through six snap-fits between the recessed portions 124 and the second snaps 132. Thus, the cover 111 and the base 150 may be stably connected to the frame 130.
[0114] FIG. 13 is a sectional view of the device 100 according to the present embodiment in a closing status with a detailed view showing a snap fit for supporting the base assembly 120. When in the closing status of the device 100, the second snap 132 of the frame 130 is engaged in the recessed portion 124 of the base 150 to support the base 150. In combination with FIGS. 2, 10 and 13, in the closing status of the device 100, the six second snaps 132 of the frame 130 are engaged in the six recessed portions 124 of the base 150. Thus, the base 150 is stably supported on the frame 130.
[0115] FIG. 14 is sectional view of the device 100 according to the present embodiment in a closing status with a detailed view showing a snap fit for assembling the cover assembly 110. When in the closing status of the device 100, the protrusion 1113 of the cover 111 is engaged below the first snap 131 of the frame 130, to prevent the cover 111 from escaping from the frame 130 from the top. In combination with FIGS. 2, 10 and 14, when in the closing status of the device 100, the eight protrusions 1113 of the cover 111 are engaged below the eight first snaps 131 of the frame 130, respectively, to prevent the cover 111 from escaping from the frame 130 from the top.
[0116] Furthermore, when in the closing status of the device 100, the cover 111 is supported on the base 150, and thus the cover 111 is clamped between the base 150 and the first snaps 131 of the frame 130, or the cover 111 and the base 150 are clamped between the first snaps 131 and the second snaps 132 of the frame 130.
[0117] A device 200 for immobilizing tissues according to another embodiment of the present disclosure will be described in detail below with reference to FIGS. 15 to 26.
[0118] FIG. 15 is a perspective view of a device 200 for immobilizing tissues according to another embodiment of the present disclosure. The device 200 includes a frame 230, a cover assembly 210 and a base assembly 220. The frame 230 is a support part for remaining parts of the device 200. The cover assembly 210 and the base assembly 220 are connected to the frame 230, the base assembly 220 has a cavity 221 configured to accommodate the tissues, and the cover assembly 210 is configured to provide a pressure on the tissues and adjust the pressure according to a height of the tissues sample, to compress the tissues against the base assembly 220 to immobilize the tissues during grossing, processing and embedding of the tissues.
[0119] In the present embodiment, the device 200 has a different size of the cover assembly 210 and a different size of the base assembly 220 configured for accommodate bigger tissues.
[0120] FIG. 16 is another perspective view of the device 200. As illustrated in FIG. 16, the cover assembly 210 includes a cover 211, a retainer 212, and an elastic structure 213 connected between the cover 211 and the retainer 212. The retainer 212 is attached to the cover 211, e.g., by hot melting or gluing. The retainer 212 is made of a two-dimensional porous material, such as nonwoven, mesh, paper, or any combination thereof. The base assembly 220 includes a base 250 and a filter 240. The filter 240 is attached to the base 250, e.g., by over-molding, hot melting or gluing. The filter 240 is made of a two-dimensional material such as nonwoven, mesh, paper or combination thereof.
[0121] FIG. 17 is a schematic diagram of a cover assembly 210 according to the present embodiment. As illustrated in FIG. 17, the elastic structure 213 includes a supporting portion 2132, and a plurality of elastic portions 2131 connected between the cover 211 and the supporting portion 2132. The cover 211 is substantially a rectangular plate, and defines a square central opening 2111 in a middle of the cover 211. The supporting portion 2132 is substantially a square plate with a maze surface, and is configured to hold the tissues. Furthermore, the supporting portion 2132 is flexible for holding the tissues having different heights. The plurality of elastic portions 2131 is configured to adjust a pressure for holding the tissues. As illustrated, there may be four elastic portions 2131. Each of four elastic portions 2131 is a spring rib extending from a side of the supporting portion 2132 to an inner side of the central opening 2111 that is opposite the side of the supporting portion 2132. The cover 211 also defines a plurality of openings 2112 around the central opening 2111. The plurality of openings 2112 may have various shapes, such as a square shape, a rectangular shape, or a long-strip shape.
[0122] FIG. 18 is an exploded view of the cover assembly 210 according to the present embodiment. As illustrated in FIG. 18, each of the plurality of elastic portions 2131 is spiral in a three-dimensional space, and tapering from the cover 211 to the supporting portion 2132, such that the pressure on the tissues is appropriate to avoid an artifact on the tissues under a microscope. It could be understood that, selection of a thickness and a width of the elastic portion 2131 also has an effect on the pressure on the tissues.
[0123] Additionally, the cover 211 includes a hook portion 2113 formed on a front side of the cover 211, a plurality of recessed portions 2114 defined in left and right sides, and a plurality of avoidance slots 2115 in left and right sides. The hook potion 2113 and the plurality of recessed portions 2114 are configured to assemble the cover assembly 210 to the frame 230, and the plurality of avoidance slots 2115 is configured to guide installation of the cover 211 to the frame 230. As illustrated in FIG. 18, one hook portion 2113 is formed on the front side of the cover 211, two recessed portions 2114 are oppositely defined in left and right sides of the cover 211, respectively, and two avoidance slots 2115 are oppositely defined in left and right sides of the cover 211, respectively. The two avoidance slots 2115 are closer to the one hook portion 2113 than the two recessed portions 2114.
[0124] FIG. 19 is a sectional view of an exploded cover assembly 210 according to the present embodiment. As illustrated in FIG. 19, the retainer 212 defines an accommodating groove 2121 for receiving the supporting portion 2132 and the plurality of elastic portions 2131. That is, the accommodating groove 2121 is manufacturing according to a spatial shape of the supporting portion 2132 and the plurality of elastic portions 2131.
[0125] Additionally, the cover 211 further includes a flange portion 2116 extending from a bottom face of the cover 211 and around the central opening 2111, the retainer 212 includes a flanged edge 2122 around the accommodating groove 2121, and the retainer 212 is attached to the flange portion 2116 by hot melting or gluing the flanged edge 2122 of the retainer 212 to a bottom face of the flange portion 2116 of the cover 211.
[0126] Additionally, there may be a gap between the supporting portion 2132 and a bottom of the accommodating groove 2121 of the retainer 212. The gap between the supporting portion 2132 and the retainer 212 facilitates deformation of the retainer 212 towards the supporting portion 2132, such that larger surface area of the tissues may be wrapped up by the retainer 212 when immobilizing tissues, the tissues may be stably held between the retainer 212 and the base 250, and an impression may be prevented from forming on a surface of the tissues.
[0127] FIG. 20 is a section view of a base assembly 220 according to the present embodiment. As illustrated in FIG. 20, the filter 240 is a substantially rectangular sheet, and has a size designed for accommodating big tissues. The filter 240 is made of a two-dimensional porous material with fine openings for infiltration of solvents and resistant to processing materials and embedding materials.
[0128] Furthermore, the base 250 defines a through groove 226 which tapers from top to bottom, and the through groove 226 is configured to receive the retainer 212 of the cover assembly 210. The filter 240 may be attached to a bottom edge of the through groove 226 to define the cavity 221 configured to contain the tissues.
[0129] Moreover, the base 250 includes a peripheral side 225, an intermediate plate 227 connected to a bottom edge of the peripheral side 225 and defining a rectangular opening, and four side walls 229 protruding downwardly from edges of the rectangular opening of the intermediate plate 227. The four side walls 229 are connected end-to-end to define the through groove 226, and the filter 240 is attached to bottom edges 222 of the four side walls 225.
[0130] FIG. 21 is a section view of a base assembly 220 according to the present embodiment. The filter 240 may be attached to the base 250, e.g., by hot melting or gluing to define a cavity 221 configured to receive the tissues and create a paraffin block when embedding. As illustrated in FIG. 21, a peripheral edge of the filter 240 is attached to the bottom edge 222 of the through groove 226 of the base 250 to define the cavity 221, and the cavity 221 has a shape matching a shape of the accommodating groove 2121 of the retainer 212.
[0131] Additionally, the base 250 may include a recessed portion 223 in a peripheral side of the base 250 and configured to assemble with the frame 230. As illustrated in FIGS. 16 and 21, the base 250 includes four recessed portions 223 formed on and spaced apart along the peripheral side of the base 250.
[0132] FIG. 22 is a perspective view of a frame 230 according to the present embodiment. The frame 230 may include a first snap 231 and a third snap 233 configured to assemble the cover assembly 210, and a second snap 232 configured to support the base assembly 220. As illustrated in FIG. 22, the frame 230 has a substantially box shape with open top and bottom, and includes four first snaps 231, four second snaps 232 and one third snap 233 (best shown in FIG. 25) formed on an inner face of the frame 230. The four first snaps 231 and the one third snap 233 are close to a top face of the frame 230, and the four second snaps 232 are lower than the four first snaps 231.
[0133] Additionally, the frame 230 includes an inclined surface 234 configured to print information of the tissues, such as a trackable code.
[0134] FIG. 23 is perspective view of the device 200 according to the present embodiment in a closing status. The recessed portion 2114 of the cover 211 corresponds in position to the first snap 231 of the frame 230 at a rear of the frame 230, the avoidance slot 2115 of the cover 211 corresponds in position to the first snap 231 of the frame 230 at a front of the frame 230, the hook portion 2113 of the cover 211 corresponds in position to the third snap 233 of the frame 230, and the recessed portion 223 of the base 250 corresponds in position to the second snap 232 of the frame 230. Thus, the cover assembly 210 may be assembled to the frame 230 through snap-fit between the recessed portion 2114 and the first snap 231 and a snap-fit between the hook portion 2113 and the third snap 233, and the base assembly 220 may be assembled to the frame 230 through a snap-fit between the recessed portion 223 and the second snap 232. In combination with FIGS. 18, 22 and 23, the two recessed portions 2114 of the cover 211 correspond in position to the two first snaps 231 of the frame 230 at the rear of the frame 230, the two avoidance slots 2115 of the cover 211 correspond in position to the two first snaps 231 of the frame 230 at the front of the frame 230, the one hook portion 2113 of the cover 211 corresponds in position to the one third snap 233 of the frame 230, and the four recessed portions 223 of the base 250 correspond in position to the four second snaps 232 of the frame 230. Thus, the cover assembly 210 may be assembled to the frame 230 through two snap-fits between the recessed portions 2114 and the first snaps 231 and one snap-fit between the hook portion 2113 and the third snap 233, and the base assembly 220 may be assembled to the frame 230 through four snap-fits between the recessed portions 223 and the second snaps 232.
[0135] FIG. 24 is a sectional view of the device 200 according to the present embodiment in a closing status with a detailed view showing a snap fit for supporting the base 250. When in the closing status of the device 200, the second snap 232 of the frame 230 is engaged in the recessed portion 223 of the base 250 to support the base 250. In combination with FIGS. 18, 22 and 24, in the closing status of the device 200, the four second snaps 232 of the frame 230 are engaged in the four recessed portions 223 of the base 250. Thus, the base 250 is stably supported on the frame 230.
[0136] FIG. 25 is a sectional view of the device 200 according to the present embodiment in a closing status with a detailed view showing a snap fit for assembling the cover assembly 210. When in the closing status of the device 200, the hook portion 2113 of the cover 211 is engaged below the third snap 233 of the frame 230, to prevent the cover 211 from escaping from the frame 230 from the top. In combination with FIGS. 18, 22 and 24, when in the closing status of the device 200, the one hook portion 2113 of the cover 211 is engaged below the third snap 233 of the frame 230, to prevent the cover 211 from escaping from the frame 230 from the top.
[0137] FIG. 26 is another sectional view of the device 200 according to the present embodiment in a closing status with a detailed view showing a snap fit for assembling the cover assembly 210. When in the closing status of the device 200, the recessed portion 2114 of the cover 211 is engaged with the first snap 231 of the frame 230, to prevent the cover 211 from escaping from the frame 230 from the top. In combination with FIGS. 18, 22 and 26, when in the closing status of the device 200, the two recessed portions 2114 of the cover 211 are engaged with the two first snaps 231 of the frame 230, respectively, to prevent the cover 211 from escaping from the frame 230 from the top.
[0138] Furthermore, when in the closing status of the device 200, the cover 211 is supported on the base 250, and thus the cover 211 is clamped between the base 250 and the first and third snaps 231, 233 of the frame 230, or the cover 211 and the base 250 are clamped between the first and third snaps 231, 233 and the second snaps 232 of the frame 230.
[0139] A device 300 for immobilizing tissues according to yet another embodiment of the present disclosure will be described in detail below with reference to FIGS. 27 to 32.
[0140] FIG. 27 is a perspective view of a device 300 for immobilizing tissues according to another embodiment of the present disclosure. The device 300 includes a frame 330, a cover assembly 310 and a base assembly 320. The frame 330 is a support part for remaining parts of the device 300. The cover assembly 310 and the base assembly 320 are connected to the frame 330, the base assembly 320 has a cavity 321 configured to accommodate the tissues, and the cover assembly 310 is configured to provide a pressure on the tissues and adjust the pressure according to a height of the tissues sample, to compress the tissues against the base assembly 320 to immobilize the tissues during grossing, processing and embedding of the tissues.
[0141] The cover assembly 310 includes a cover 311, a retainer, 312 and an elastic structure 313 connected between the cover 311 and the retainer 312. The retainer 312 is attached to the cover 311, e.g., by hot melting or gluing. The retainer 312 is made of a two-dimensional porous material, such as nonwoven, mesh, paper, or any combination thereof. The base assembly 320 includes a base 350 and a filter 340. The filter 340 is attached to the base 350, e.g., by over-molding, hot melting or gluing. The filter 340 is made of a two-dimensional material such as nonwoven, mesh, paper or combination thereof.
[0142] The filter 340 is a substantially rectangular sheet, and has a size designed for accommodating small tissues. The filter 340 is made of a two-dimensional porous material with fine openings for infiltration of solvents and resistant to processing materials and embedding materials.
[0143] Furthermore, the base 350 defines a receiving groove 322 which tapers from top to bottom, and the receiving groove 322 is configured to receive the retainer 312 of the cover assembly 310. The filter 340 may be received in the receiving groove 322 and attached to a bottom of the receiving groove 322. The base 350 may define a plurality of openings in the bottom of receiving groove 322. The plurality of openings 323 may have various shapes, such as a square shape, a rectangular shape, or a long-strip shape. It could be understood that a size of the fine openings of the filter 340 is smaller than a size of the openings 323 in the base 350. The filter 340 may prevent the small tissues from loss during grossing, processing and embedding, to ensure the safety of the tissues.
[0144] The filter 340 may be attached to the base 350, e.g., by hot melting or gluing to define a cavity 321 configured to receive the tissues and create a paraffin block when embedding. As illustrated in FIG. 27, a peripheral edge of the filter 340 is received in the receiving groove 322 and attached to the bottom of the receiving groove 322 of the base 350 to define the cavity 321, and the cavity 321 has a shape matching a shape of a combination of the elastic portions 3131 and the retainer 312.
[0145] Moreover, the base 350 includes a peripheral side 325, an intermediate plate 327 connected to a bottom edge of the peripheral side 325 and defining a rectangular opening, four side walls 329 protruding downwardly from edges of the rectangular opening of the intermediate plate 327, and a bottom wall 328 connected to bottom edges of the four side walls 329. The four side walls 229 are connected end-to-end to define the receiving groove 322 together with the bottom wall 328, and the filter 340 is supported on the bottom wall 328.
[0146] FIG. 28 is a schematic diagram of a cover assembly 310 according to the present embodiment. As illustrated in FIG. 28, the elastic structure 313 includes a connecting portion 3133, a supporting portion 3132, and a plurality of elastic portions 3131 connected between the connecting portion 3133 and the supporting portion 3132. The connecting portion 3133 is connected to the cover 311. The cover 311 is substantially a rectangular plate, and defines a plurality of opening 3113. The plurality of openings 3113 may have various shapes, such as a square shape, a rectangular shape, a long-strip shape, a curved shape, or a circular shape.
[0147] The supporting portion 3132 is substantially a square loop, and is configured to hold the tissues. Furthermore, the supporting portion 3132 is flexible for holding the tissues having different heights. The plurality of elastic portions 3131 is configured to adjust a pressure for holding the tissues. As illustrated, there may be four elastic portions 3131. Each of four elastic portions 3131 is a spring rib extending from a side of the supporting portion 3132 to an inner side of the connecting portion 3133 that is opposite the side of the supporting portion 3132.
[0148] The connecting portion 3133 includes a recessed portion 3134, and the cover 311 includes a snap 3111 engaged with the recessed portion 3134. Thus, the connecting portion 3133 is detachably connected to the cover 311. As illustrated in FIG. 28, the connecting portion 3133 includes eight recessed portions 3134, and the cover 311 includes eight snaps 3111 engaged with the recessed portions 3134, respectively. Thus, the connecting portion 3133 may be stably connected to the cover 311.
[0149] FIG. 29 is a sectional view of a cover assembly 310 according to the present embodiment. Each of the plurality of elastic portion 3131 has a substantially L-shape, such that the pressure on the tissues is appropriate to avoid an artifact on the tissues under a microscope. It could be understood that, selection of a thickness and a width of the elastic portion 3131 also has an effect on the pressure on the tissues.
[0150] FIG. 30 is a perspective view of the device 300 according to the present embodiment in a closing status. The connection between the cover assembly 310 and the frame 330 and between the base assembly 320 and the frame 330 of the present embodiment is the same as the connection between the cover assembly 110 and the frame 130 and between the base assembly 120 and the frame 130 of the embodiment shown in FIGS. 1 to 14. Hence, the details of the connection between the cover assembly 310 and the frame 330 and between the base assembly 320 and the frame 330 of the present embodiment may refer to the description of the connection between the cover assembly 110 and the frame 130 and between the base assembly 120 and the frame 130 of the embodiment shown in FIGS. 1 to 14, which is not repeated herein.
[0151] FIG. 31 is another perspective view of the device 300 according to the present embodiment in a closing status. As illustrated in FIG. 31, the base 350 defines a plurality of openings 323 in the bottom of the receiving groove 322 for infiltration of solvents during grossing, processing and embedding.
[0152] FIG. 32 is a section view of the device 300 according to the present embodiment in a closing status. As illustrated in FIG. 32, the elastic portions 3131 and the retainer 312 are received in the cavity 321 of the base assembly 320. Thus, tissues may be immobilized between the retainer 312 and the base assembly 320.
[0153] A device 400 for immobilizing tissues according to still another embodiment of the present disclosure will be described in detail below with reference to FIGS. 33 to 37.
[0154] FIG. 33 is a perspective view of a device 400 for immobilizing tissues according to still another embodiment of the present disclosure. The device 400 includes a frame 430, a cover assembly 410 and a base assembly 420. The frame 430 is a support part for remaining parts of the device. The cover assembly 410 and the base assembly 420 are connected to the frame 430, the base assembly 420 has a cavity 421 configured to accommodate the tissues, and the cover assembly 410 is configured to provide a pressure on the tissues and adjust the pressure according to a height of the tissues sample, to compress the tissues against the base assembly 420 to immobilize the tissues during grossing, processing and embedding of the tissues.
[0155] FIG. 34 is an exploded view of a cover assembly 410 according to the present embodiment. As illustrated in FIG. 34, the cover assembly 410 includes a cover 411, a retainer, and an elastic structure 413 connected between the cover 411 and the retainer 412. The retainer 412 is attached to the cover 411, e.g., by hot melting or gluing. The retainer 412 is made of a two-dimensional porous material, such as nonwoven, mesh, paper, or any combination thereof.
[0156] The elastic structure 413 includes a connecting portion 4133, and a plurality of elastic portions 4131 connected to the connecting portion 4133. Each of the plurality of elastic portions 4131 is a spring rib extending vertically from connecting portion 4133. The elastic structure 413 assumes a brush shape. The connecting portion 4133 is connected to the cover 411. The cover 411 is substantially a rectangular plate, and defines a square central opening 4111 in a middle of the cover 411. The cover 411 includes a flange portion 4112 along an edge of the central opening 4111, and the flange portion 4112 radially extends into the central opening 4111, and a plurality of pins 4114 formed on a top face of the flange portion 4112 and in the central opening 4111. The connecting portion 4133 is a substantially square plate, and has a plurality of holes 4134 engaged with the plurality of pins 4114, respectively. Furthermore, the plurality of pins 4114 is in interference fit with the plurality of holes 4134. Thus, the connecting portion 4133 may be stably connected to the cover 411.
[0157] The cover 411 also defines a plurality of openings 4113 around the central opening 4111. The plurality of openings 4113 may have various shapes, such as a square shape, a rectangular shape, or a long-strip shape.
[0158] FIG. 35 is a perspective view of the device according to the present embodiment in a closing status. The connection between the cover assembly 410 and the frame 430 and between the base assembly 420 and the frame 430 of the present embodiment is the same as the connection between the cover assembly 110 and the frame 130 and between the base assembly 120 and the frame 130 of the embodiment shown in FIGS. 1 to 14. Hence, the details of the connection between the cover assembly 410 and the frame 430 and between the base assembly 420 and the frame 430 of the present embodiment may refer to the description of the connection between the cover assembly 110 and the frame 130 and between the base assembly 120 and the frame 130 of the embodiment shown in FIGS. 1 to 14, which is not repeated herein.
[0159] FIG. 36 is a section view of the device according to the present embodiment in a closing status. As illustrated in FIG. 36, the elastic portions 4131 and the retainer 412 are received in the cavity of the base assembly 420. Thus, tissues may be immobilized between the retainer 412 and the base assembly 420.
[0160] FIG. 37 is another section view of the device according to the present embodiment in a closing status. As illustrated in FIG. 36, the elastic portions 4131 and the retainer 412 are received in the cavity 421 of the base assembly 420. Thus, a plurality of tissues may be immobilized between the retainer 412 and the base 450 at the same time. The specific structure of the base 450 is similar to the specific structure of the base 350, and reference may be made to the description the base 350.
[0161] A working process of the device 100 for immobilizing multiple tissues 900 in an auto-embedder will be described in detail with reference to FIGS. 38 to 44.
[0162] FIG. 38 is a sectional view of the device 100 according to an embodiment of the present disclosure illustrated in FIG. 12. As illustrated in FIG. 38, the tissues 900 are accommodated in the cavity 121 between the filter 140 and the elastic structure 113. The elastic structure 113 and the retainer 112 are raised up by the tissues 900 to create a three-dimensional space for holding the tissues 900 against the base assembly 120.
[0163] FIG. 39 is a schematic view of a cooling mold 500 according to an embodiment of the present disclosure. As illustrated in FIG. 39, an auto-embedder may include a cooling mold 500 configured to support the device 100 for immobilizing multiple tissues 900 and cool liquid paraffin 700 into a solid. The cooling mold 500 may be made of aluminum. The cooling mold 500 defines a mold groove 501 having a shape matching a shape of the base assembly 120, to receive the base assembly 120 during automatic embedding. The cooling mold 500 may be provided with a step portion 503 around the mold groove 501, and when the device 100 is supported on the cooling mold 500, a bottom of the frame 130 is supported on the step portion 503. The cooling mold 500 also defines third paraffin slots 505 and fourth paraffin slots 507 in side walls of the mold groove 501. The third paraffin slots 505 and the fourth paraffin slots 507 are configured to accommodate liquid paraffin 700 when dispensing paraffin, and after cooling, the liquid paraffin 700 in the third paraffin slots 505 and the fourth paraffin slots 507 becomes solid and is treated as undercut to hold the base assembly 120 in the cooling mold 500 when detaching the solid paraffin block 800 from the cooling mold 500.
[0164] FIG. 40 is a schematic view of a device for immobilizing multiple tissues 900 and a cooling mold 500 according to an embodiment of the present disclosure. As illustrated in FIG. 40, the device 100 is placed on the cooling mold 500 and ready for automatic embedding.
[0165] FIG. 41 is a sectional view of FIG. 40. As illustrated in FIG. 41, the device 100 is supported on the cooling mold 500. The tissues 900 are held in position between the cover assembly 110 and the base assembly 120, the bottom of the frame 130 is supported on the step portion 503 of the cooling mold 500, and the mold groove 501 is empty.
[0166] FIG. 42 is another sectional view of a cooling mold 500 and a device for immobilizing multiple tissues 900 according to an embodiment of the present disclosure. As illustrated in FIG. 42, the base assembly 120 with the tissues 900 is pushed into the mold groove 501 by pushing down the cover assembly 110. Thus, the cover assembly 110 and the base assembly 120 are separated from the frame 130 and the tissues 900 are located out of the frame 130. The first paraffin slots 151 in the base 150 correspond to the third paraffin slots 505 in the cooling mold 500, respectively, and the second paraffin slots 153 in the base 150 correspond to the fourth paraffin slots 507 in the cooling mold 500, respectively. Thus, undercut formed in the base 150 and the cooling mold 500 after the liquid paraffin 700 is solidified may cooperatively hold the base assembly 120 in the cooling mold 500 when the solid paraffin block 800 is detached from the cooling mold 500.
[0167] FIG. 43 is another sectional view of a cooling mold 500 and a device for immobilizing multiple tissues 900 according to an embodiment of the present disclosure. As illustrated in FIG. 43, the liquid paraffin 700 is dispensed into the device 100 and infiltrated into the mold groove 501 through the openings in the cover 111 and the openings in the retainer 112 as well as the openings in the filter 140. Thus, the liquid paraffin 700 may fill the mold groove 501, an internal space of the base assembly 120, an internal space of the cover assembly 110, and at least a part of an internal space of the frame 130.
[0168] FIG. 44 is a schematic view of a solid paraffin block according to an embodiment of the present disclosure. As illustrated in FIG. 44, after the liquid paraffin 700 become solid, the frame 130 and the cover assembly 110 with the solid paraffin block 800 are detached from the cooling mold 500, and the base assembly 120 is left in the cooling mold 500. There is no foreign material left in the solid paraffin block 800 along the height of the tissues 900 embedded in the solid paraffin block 800, and the tissues 900 are against a bottom surface 801 of the solid paraffin block 800. Hence, it is highly efficient to expose a full surface of the tissues 900 when sectioning in a microtome.
[0169] A working process of the device 200, 300, 400 for immobilizing multiple tissues 900 in an auto-embedder may refer to the description of the working process of the device 100 for immobilizing multiple tissues 900 in an auto-embedder, which will not be elaborated herein.
[0170] Reference throughout this specification to “an embodiment, ” “some embodiments, ” “one embodiment” , “another example, ” “an example, ” “a specific example, ” or “some examples, ” means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. Thus, the appearances of the phrases such as “in some embodiments, ” “in one embodiment” , “in an embodiment” , “in another example, ” “in an example, ” “in a specific example, ” or “in some examples, ” in various places throughout this specification are not necessarily referring to the same embodiment or example of the present disclosure. Furthermore, the particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0171] Although explanatory embodiments have been shown and described, it would be appreciated by those skilled in the art that the above embodiments cannot be construed to limit the present disclosure, and changes, alternatives, and modifications can be made in the embodiments without departing from spirit, principles and scope of the present disclosure.
[0172] Reference numerals: 100 device 110 cover assembly 111 cover 1111 square central opening 1112 openings 1113 protrusion 1114 flange portion 1115 openings 112 retainer 1121 accommodating groove 1122 flanged edge 113 elastic structure 1131 elastic portions 1132 supporting portion 114 gap 120 base assembly 150 base 151 first paraffin slots 153 second paraffin slots 121 cavity 122 bottom edge 123 annular groove 124 recessed portion 125 peripheral side 126 through groove 127 intermediate plate 129 side wall 130 frame 131 first snap 132 second snap 133 inclined surface 140 filter 200 device 210 cover assembly 211 cover 2111 square central opening 2112 openings 2113 hook portion 2114 recessed portion 2115 avoidance slot 2116 flange portion 212 retainer 2121 accommodating groove 2122 flanged edge 213 elastic structure 2131 elastic portion 2132 supporting portion 220 base assembly 250 base 221 cavity 222 bottom edge 223 recessed portion 225 peripheral side 226 through groove 227 intermediate plate 229 side wall 230 frame 231 first snap 232 second snap 233 third snap 234 inclined surface 240 filter 300 device 310 cover assembly 311 cover 3111 snap 3113 opening 312 retainer 313 elastic structure 3131 elastic portion 3132 supporting portion 3133 connecting portion 3134 recessed portion 320 base assembly 350 base 321 cavity 322 receiving groove 323 openings 325 peripheral side 327 intermediate plate 328 bottom wall 329 side wall 330 frame 340 filter 400 device 410 cover assembly 411 cover 4111 square central opening 4112 flange portion 4113 openings 4114 pin 412 retainer 413 elastic structure 4131 elastic portion 4133 connecting portion 4134 holes 420 base assembly 421 cavity 430 frame 440 filter 450 base 500 cooling mold 501 mold groove 503 step portion 505 third paraffin slots 507 fourth paraffin slots 700 liquid paraffin 800 solid paraffin block 801 bottom surface 900 tissues
Claims
1.A device for immobilizing multiple tissues for an auto-embedder, comprising:a cover assembly comprising:a cover having openings for infiltration of solvents during grossing, processing and embedding,an elastic structure connected to the cover and configured to provide a pressure on the tissues and adjust the pressure according to the height of the tissues, anda retainer connected to at least one of the cover or the elastic structure, made of a two-dimensional porous material which is infiltrated and resistant to the solvents used to fix, process and embed, and configured to wrap the tissues;a base assembly having a cavity configured to contain the tissues, and comprising:a base comprising four side walls connected end-to-end, anda filter attached to the four side walls to define the cavity, the filter being made of a two-dimensional porous material which is infiltrated and resistant to solvents used to fix, process and embed; anda frame, the cover assembly and the base assembly being detachably attached to the frame,wherein the two-dimensional porous material has bigger permeability with smaller opening size than the cover and / or base, andwherein the retainer is located between the elastic structure and the base assembly such that the tissues contained in the base assembly is held in position by the elastic structure and the retainer.2.The device of claim 1, wherein the base defines a through groove tapering from top to bottom, and the filter is attached to a bottom edge of the through groove and closes the through groove to define the cavity.3.The device of claim 1, further comprising a solid material configured to support the filter on the base in case the filter is not stiff or flat, particularly for injection molding.4.The device of claim 1, wherein the filter is attached to the base by insert molding, hot melting or gluing.5.The device of any one of claims 1 to 4, wherein the two-dimensional porous material includes nonwoven, mesh, paper, or any combination thereof.6.The device of any one of claims 1 to 5, wherein the elastic structure and the cover are formed into one piece, or the elastic structure is a separate part from the cover.7.The device of any one of claims 1 to 6, wherein the retainer is attached to at least one of the cover or the elastic structure by insert molding, hot melting or gluing.8.The device of any one of claims 1 to 7, wherein the elastic structure comprises a plurality of elastic portion and a supporting portion, the plurality of elastic portions are connected between the cover and the supporting portion and configured to provide the pressure on the tissues and adjust the pressure according to the height of the tissues, and the supporting portion is configured to hold the tissues.9.The device of claim 8, wherein the elastic structure further comprises a connecting portion connected between the cover and the plurality of elastic portions.10.The device of claim 9, wherein the connecting portion includes a recessed portion, the cover includes a snap, and the snap of the cover is engaged in the recessed portion of the connecting portion to fix the cover and the connecting portion together.11.The device of any one of claims 8 to 10, wherein the retainer is attached to the supporting portion.12.The device of any one of claims 8 to 10, wherein the retainer has an accommodating groove configured to receive the elastic structure, and a gap is defined between the supporting portion and a bottom of the accommodating groove of the retainer.13.The device of any one of claims 1 to 8, wherein the elastic structure comprises a connecting portion and a plurality of elastic portions, the connecting portion is connected between the cover and the plurality of elastic portions, and the plurality of elastic portions are configured to provide the pressure on the tissues and adjust the pressure according to the height of the tissues, and the supporting portion is configured to hold the tissues.14.The device of claim 13, wherein the connecting portion defines a hole, the cover comprises a pin, and the pin of the cover is in interference fit with the hole of the connecting portion.15.The device of any one of claims 1 to 14, wherein the retainer has an accommodating groove configured to receive the elastic structure, and a flanged edge around the accommodating groove, the cover comprises a flange portion, and the flanged edge of the retainer is connected to the flange portion of the cover.
Citation Information
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